Answer:
sodium bicarbonate, potassium bicarbonate and ammonium bicarbonate are the most commonly used bases.
Which two types of information are found in an element's box in the periodic
table?
O A. Chemical composition
B. Atomic mass
C. Atomic structure
D. Element name
Answer:
The answer is B and D.
Explanation:
prove me wrong
Answer: b an d
Explanation:
PLZ HELP! THIS IS DUE IN A FEW MINS!
What would happen to work and power if the mass of the person walking was increased or decreased? EXPLAIN.
Answer:
work and power increases or decreases opposite of the mass
Explanation:
This Is beacuse Work is the product of Mass, Gravity, and Height
Question 8 of 10
What will happen when a reactant is added to a system at equilibrium?
A. The system will remain at equilibrium.
B. Only the concentration of that reactant will change.
C. More reactants will form.
D. The equilibrium of the system will be upset.
SUBMIT
the equilibrium of the system will be upset
Explanation:
how many particles are in 2.4 moles of carbon dioxide
Answer:
Calculate it, times 6.022
What is the mass of 3.02 x 1025 formula units of barium nitrate?
Answer:
10000 g BaNO₃
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:
Step 1: Define
3.02 × 10²⁵ formulas units BaNO₃
Step 2: Identify Conversions
Avogadro's Number
Molar Mass of Ba - 137.33 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of BaNO₃ - 137.33 + 14.01 + 3(16.00) = 199.34 g/mol
Step 3: Convert
[tex]3.02 \cdot 10^{25} \ formula \ units \ BaNO_3(\frac{1 \ mol \ BaNO_3}{6.022 \cdot 10^{23} \ formula \ units \ BaNO_3} )(\frac{199.34 \ g \ BaNO_3}{1 \ mol \ BaNO_3} )[/tex] = 9996.79 g BaNO₃
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
9996.79 g BaNO₃ ≈ 10000 g BaNO₃
Please Help Me Balance The equation!! will mark brainliest
Answer: XCl2(aq) + 2 AgNO3(aq) ---> X(NO3)2(aq) + 2 AgCl(s)
Explanation:
Hehe I remembered how...
HELP! ASAP!!! WILL MARK BRAINLIEST!!
Which of the following compounds in the main group is an alkali metal? Question 7 options: Beryllium (Be) Rubidium (Rb) Hydrogen (H) Strontium (Sr)
Answer:
Rb
Alkali Metals are Group 1 so
Rb it isnt Hydrogen because it is a gas
Explanation:
Compare the modern model of an atom to the atomic model proposed by John Dalton in 1805
Answer:
See explanation
Explanation:
Dalton's atomic theory furnished us with a basis to discuss the theory of atoms. However, not all his ideas holds up under the scruitiny of morden science.
He postulated that atoms were 'indivisible' the discovery of subatomic particles indeed show that there are smaller particles than atoms.
His postulation that atoms can neither be created nor destroyed does not hold water today because atoms are being created in nuclear reactors.
He said that atoms of all elements are exactly alike. Today we know there are isotopes of elements which are not exactly alike.
We can see that the Dalton's atomic theory did not take cognisance of the important role of subatomic particles in studying the structure of the atom. Modern atomic theory tries to look at the importance of these particles in the understanding the structure of the atom.
What will most likely happen to the action of an enzyme from the small intestine if it is placed in
an environment similar to the environment in which enzyme C functions best?
Answer:
It would be able to function because the ph of the environment is similar to that of intestine.
Explanation:
The pH of the small intestine is eight. The enzyme would be able to function because enzyme C functions best at a Ph range around 8.
hypothesize why carbohydrates are found in plant cell walls
Answer:
Plants can split starch into it's simpler glucose units for use as energy when needed. Cellulose is known as a structural carbohydrate because of the fibers formed by it's molecules. It is the major component of plant cell walls and comprises over half of the carbon found on planets.
Explanation:
I majored in Chemistry
SHOW WORK
The iPhone X is 5.65 inches long. What is the length in cm?
Answer:
14.351
Explanation:
Which particle has high rate of deposition
Answer:
a particle with jagged rough ends has a high rate of deposition
Answe
Explanation:
1st Remove ( )
2nd select like terms
3rd Move the constant to the left
4th calculate
5th divided both sides
6th use quadratic formula
Which type of reaction is C1pHO11 12C + 11H,0?
O synthesis
O decomposition
O oxidation
O combustion
Answer:
C. oxidation ..........
The given reaction is the breaking of the carbohydrate C₁₂H₂₂O₁₁ into 12 C and 11 H₂O. Hence, it is a decomposition reaction .
What is decomposition reaction ?A decomposition reaction is a type of chemical reaction in which a compound breaks down into two or more simpler substances, either through heat, light, or an electrical current.
In a decomposition reaction, a single reactant is converted into two or more products, which can be elements or compounds.
The general equation for a decomposition reaction can be written as:
AB → A + B
where AB is the reactant and A and B are the products.
Decomposition reactions are important in many chemical processes, such as the breakdown of organic matter in soil, the production of industrial chemicals, and the functioning of biological systems.
The given reaction is the decomposition of C₁₂H₂₂O₁₁ into 12 C and 11 H₂O.
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Your complete question is follows:
C₁₂H₂₂O₁₁ ⇒ 11 H₂O + 12 C
Which type of reaction is
O synthesis
O decomposition
O oxidation
O combustion
If u wanted to measure an irregular object volume which of the following device’s could u see
HELP PLSSSSS!!
Find the molar mass of air in your room, assuming the molar mass of air is
28.97 g/mol
Volume of room is 52,681,428.8 Liters
Answer:
68133080.02 g
Explanation:
I believe that the question is to find the mass of air in the room and not the molar mass of air since the molar mass of air was already given in the question as 28.97 g/mol.
Now, if 1 mole of a gas occupies 22.4 L
x moles of air occupies 52,681,428.8 Liters
x = 1 * 52,681,428.8 /22.4
x = 2351849.5 moles of air
Now, number of moles = mass/ molar mass
but molar mass = 28.97 g/mol
2351849.5 = mass/28.97
mass = 2351849.5 * 28.97
mass = 68133080.02 g
Don't help me
Ima fine.k!!!!!!!!
Answer:
ok!
Explanation:
14. What is the total number of kilojoules of heat needed to change 150. G of
ice to water at 0°C?
Answer:
[tex]\boxed {\boxed {\sf 50.1 \ kJ}}[/tex]
Explanation:
When water changes from ice (solid) to water (liquid), it is melting or fusion. Therefore, we can use the following formula to find energy:
[tex]q=mH_f[/tex]
where q is the energy, m is the mass, and Hf is the heat of fusion.
1. Define Values
The mass is 150 grams. The heat of fusion for water is 334 Joules per gram.
[tex]m= 150 \ g \\H_f=334 \ J/g[/tex]
2. Calculate Energy
Substitute the values into the formula.
[tex]q=150 \ g * 334 \ J/g[/tex]
Multiply. Note that the grams (g) will cancel each other out and leave Joules as our units.
[tex]q=150 *334 \ J[/tex]
[tex]q=50100 \ J[/tex]
3. Convert Units
We found the answer in joules, but the question asks for kilojoules, so we must convert.
There are 1000 Joules in 1 kilojoule. Therefore, we can divide the joules calculated by 1000.
[tex]50100 \ J *\frac{1 \ kJ}{1000 \ J}[/tex]
[tex]\frac{50100 \ kJ}{1000 \ }[/tex]
[tex]50.1 \ kJ[/tex]
50.1 kilojoules are needed to change 150 grams of ice to water.
These stop the electricity from flowing (examples: glass, rubber). (Lesson 5.03)
A:electric current
B:insulator
C:resistor
D:conductor
Answer:
B. insulator
hope it helps
The materials which prevents flow of electric current through it is called insulators. Thus, option B is correct. The materials which allow the current are conductors.
What are insulators?There are three types of substances based on their conducting nature. The materials which are highly conducting electrically at normal condition are called conductors. For example: metals.
Materials which does not conduct electricity at any condition are called insulators. Insulators prevent the flow of free electrons and thus are resistant to electric shock, example: wood
Some materials which does not conduct at normal temperature but, will conduct at higher temperature and also upon mixed with other materials are called semiconductors. example: silicon. Therefore, option B is correct.
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What is the chemical formula for sodium oxalate?
Answer:
The formula is Na2C2O4
Explanation:
I hope this helps
In the product 6O2, what does the coefficient mean?
Answers:
There are 12 molecules of O2,
There are 8 molecules of O2,
There are 6 molecules of O2.
There are 2 molecules of O2.
Answer:
(A) there are 12
Explanation:
bc
Water weathers rock and minerals by ___________________ them.
melting
dissolving
burning
ablating
Answer:
Dissolving?
Explanation:
Answer:
B. Dissovling
Explanation:
Im a smart boy G.
Describe the reactions role in earths natural processes?
Answer:
energy flow and nutrient cycles ( photosynthesis , food webs, decomposition webs) sediment transport and soil formation. the water cycle. reproduction/ regeneration mechanisms.
catalyst
A reaction between NH, and O, is the first step in the
preparation of nitric acid (HNO3) on a commercial scale.
The products are produced at 1000°C (1273 K) and at at-
mospheric pressure.
4 NH; (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (1)
a. What volume of NO is produced in the reaction vessel
by the reaction of 0.500 mol O2?
b. What mass of H2O is produced by the reaction of 15.0 L
of NH3?
c. How many liters of O, must react to produce 35.5 L of
NO?
a. volume of NO : 41.785 L
b. mass of H2O : 18 g
c. volume of O2 : 9.52 L
Further explanationGiven
Reaction
4 NH₃ (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l)
Required
a. volume of NO
b. mass of H2O
c. volume of O2
Solution
Assume reactants at STP(0 C, 1 atm)
Products at 1000 C (1273 K)and 1 atm
a. mol ratio NO : O2 from equation : 4 : 5, so mo NO :
[tex]\tt \dfrac{4}{5}\times 0.5=0.4[/tex]
volume NO at 1273 K and 1 atm
[tex]\tt V=\dfrac{nRT}{P}=\dfrac{0.4\times 0.08206\times 1273}{1}=41.785~L[/tex]
b. 15 L NH3 at STP ( 1mol = 22.4 L)
[tex]\tt \dfrac{15}{22.4}=0.67~mol[/tex]
mol ratio NH3 : H2O from equation : 4 : 6, so mol H2O :
[tex]\tt \dfrac{6}{4}\times 0.67=1[/tex]
mass H2O(MW = 18 g/mol) :
[tex]\tt mass=mol\times MW=1\times 18=18~g[/tex]
c. mol NO at 1273 K and 1 atm :
[tex]\tt n=\dfrac{PV}{RT}=\dfrac{1\times 35.5}{0.08206\times 1273}=0.34[/tex]
mol ratio of NO : O2 = 4 : 5, so mol O2 :
[tex]\tt \dfrac{5}{4}\times 0.34=0.425[/tex]
Volume O2 at STP :
[tex]\tt 0.425\times 22.4=9.52~L[/tex]
What is the electron configuration of a sulfur atom in the ground state?
Answer:
1s²2s²p⁶3s²p⁴
Explanation:
An atom that is in the ground state has not lost or gained electrons. If we look at the Periodic Table, we can see that the electron configuration of the sulfur atom (S) is [Ne]3s²p⁴. Since the electron configuration of Ne is 1s²2s²p⁶, the complete electron configuration is 1s²2s²p⁶3s²p⁴.
Which picture above represents a mixture of elements?
Answer:
(a) because they are not being mixed
From the following given options, the picture showing the mixture of elements is Picture (a) i.e, Mixture of O₂ and N₂.
What is a Mixture ?
In chemistry, a mixture is a material made up of two or more different chemical substances which are not chemically bonded.
A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
Therefore, From the following given options, the picture showing the mixture of elements is Picture (a) i.e, Mixture of O₂ and N₂.
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How many megagrams are in 90.532 g?
What does bananas batteries and people have in common
HOLMIUM
1.what is the coordinate?
2.what is the long-form electron configuration?
3.what is the short-hand electron configuration?
4.number of valence electrons?
Answer:
1. The graph where x axis and y axis are present is called coordinate.
4. 18
Experimental data are collected as: x[100]={1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100}; y[100]={-92.3973,14.0677,98.9626,49.6151,111.88,-38.7967,52.1535,-101.325,65.6111,125.129,151.762, -123.132,-41.8744,-39.3356,-99.7856,-128.881,58.5477,-111.692,-75.3057,4.4723,-100.051,169.051, -15.6953,58.3125,147.346,10.9835,42.3421,166.697,-105.534,-90.2199,151.189,130.022,-8.1448,-51.3493, 164.427,119.154,-99.2704,155.986,133.212,118.035,13.1819,139.678,81.5178,-12.4377,-11.7671,146.627, -25.787,107.25,19.8867,15.6437,112.871,122.552,8.42037,-10.1364,146.682,178.531,203.565,-70.7871, 171.256,-50.6232,193.836,-34.7733,-68.9564,25.3423,75.6537,21.5484,46.5259,-64.22,-13.5792, 74.9213,-26.6872,30.5302,169.534,-36.7224,65.4419,113.978,68.1137,181.414,127.76,145.447,75.5486, 164.201,169.504,110.07,96.713,114.974,155.46,2.72803,-59.9407,13.426,29.9344,-11.052,176.639, 162.505,-18.3784,184.418,234.104,127.227,145.18,0.440172}; Obtain the regression line in the form of y = a x + b.
hi myself thx for the answers
A reaction involved in the production of iron from iron ore is:
Fe2O3(s)
CO (g)
Fe (s)
CO2
a) How many kilograms of CO must react to produce 3.50 kg of Fe?
b) What mass of CO, would be produced?
Answer:
a) 2.632 kg
b) 41.36 kg
Explanation:
Given data:
Mass of CO react = ?
Mass of Fe formed = 3.50 Kg (3.50 /1000 =3500 g)
Mass of CO₂ formed = ?
Solution:
Chemical equation;
Fe₂O₃ + 3CO → 2Fe + 3CO₂
Number of moles of Fe:
Number of moles = mass/molar mass
Number of moles = 3500 g/55.85 g/mol
Number of moles = 62.67 mol
now we will compare the moles of iron with CO.
Fe : CO
2 : 3
62.67 : 3/2×62.67 = 94 mol
Mass of CO:
Mass = number of moles × molar mass
Mass = 94 mol × 28 g/mol
Mass = 2632 g
In kilogram:
2632g × 1 Kg /1000 g
2.632 kg
Now we will compare the moles of Fe with CO₂
Fe : CO₂
2 : 3
62.67 : 3/2×62.67 = 94 mol
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 94 mol × 44 g/mol
Mass = 4136 g
In kilogram:
4136g × 1 Kg /1000 g
41.36 kg